// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_CERT_CT_OBJECTS_EXTRACTOR_H_
#define NET_CERT_CT_OBJECTS_EXTRACTOR_H_

#include <string>

#include "net/base/net_export.h"
#include "net/cert/x509_certificate.h"

namespace net {

namespace ct {

    struct LogEntry;

    // Extracts a SignedCertificateTimestampList that has been embedded within a
    // leaf cert as an X.509v3 extension with the OID 1.3.6.1.4.1.11129.2.4.2.
    // If the extension is present, returns true, updating |*sct_list| to contain
    // the encoded list, minus the DER encoding necessary for the extension.
    // |*sct_list| can then be further decoded with ct::DecodeSCTList
    NET_EXPORT_PRIVATE bool ExtractEmbeddedSCTList(
        X509Certificate::OSCertHandle cert,
        std::string* sct_list);

    // Obtains a PrecertChain log entry for |leaf|, an X.509v3 certificate that
    // contains an X.509v3 extension with the OID 1.3.6.1.4.1.11129.2.4.2. On
    // success, fills |*result| with the data for a PrecertChain log entry and
    // returns true.
    // The filled |*result| should be verified using ct::CTLogVerifier::Verify
    // Note: If |leaf| does not contain the required extension, it is treated as
    // a failure.
    NET_EXPORT_PRIVATE bool GetPrecertLogEntry(X509Certificate::OSCertHandle leaf,
        X509Certificate::OSCertHandle issuer,
        LogEntry* result);

    // Obtains an X509Chain log entry for |leaf|, an X.509v3 certificate that
    // is not expected to contain an X.509v3 extension with the OID
    // 1.3.6.1.4.1.11129.2.4.2 (meaning a certificate without an embedded SCT).
    // On success, fills |result| with the data for an X509Chain log entry and
    // returns true.
    // The filled |*result| should be verified using ct::CTLogVerifier::Verify
    NET_EXPORT_PRIVATE bool GetX509LogEntry(X509Certificate::OSCertHandle leaf,
        LogEntry* result);

    // Extracts a SignedCertificateTimestampList that has been embedded within
    // an OCSP response as an extension with the OID 1.3.6.1.4.1.11129.2.4.5.
    // If the extension is present, and the response matches the issuer and
    // serial number, returns true, updating |*sct_list| to contain
    // the encoded list, minus the DER encoding necessary for the extension.
    // |*sct_list| can then be further decoded with ct::DecodeSCTList.
    NET_EXPORT_PRIVATE bool ExtractSCTListFromOCSPResponse(
        X509Certificate::OSCertHandle issuer,
        const std::string& cert_serial_number,
        const std::string& ocsp_response,
        std::string* sct_list);

} // namespace ct

} // namespace net

#endif // NET_CERT_CT_OBJECTS_EXTRACTOR_H_
